I’m confused by that link; it gives several solutions and it’s unclear which one to use, as the last one follows a query to do something quite different (linking to a category page). Also, I’m wondering about the excerpts; if I want to display an excerpt in the slider even though it’s linking to a page, can I do that? Do I need an excerpts for pages plugin to accomplish it?

I figured this out, wanted to share. The middle one in the support link above is the right one; the last one Dude gives is for showing a category page as queried above it. For excerpts, I have found that the page-excerpts plugin works just fine and the excerpt does show up in the slider.